Draftsman&#39;s scale



` www@ P, PASQUAR ELLO. DRAFTsMAN's SCALE.

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PASQUALE PASQUARIIELLU, Olli* NEW HAVEN, ENNCTTCUT.

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application mea :February a, ieee. serial 1ro. estese.

To all whom it may conce/fm 1de it known that 1, PASQUALE PASQUA- ninLLo, a subject of the ling ot lltaly, residing at New Haven, in the county otNew Haven and State ot Connecticut, have invented a new and uset'ul lmprovement in Draftsmens Scales and l dovhereby declare the following, when taken in connection with the accompanying drawings, and the' characters ot' reference marked thereon, to be a tull, clear, and exact description of the same, and which said drawings constitute part of this application, and represent in- 1F ig. 1 a plan view of a drattsmans scale constructed in accordance with my invention.

Fig. 2 an edge view of the same.

lT ig. 3 a sectional view on thefline 3-3 of 1F ig. 1. l

Fig. l a sectional view. on the line 4 4 of Fig. 1. l

lfig. 1.

lfig 6 a sectional view on the liriche-46 of lfig. 1.

This .invention relates to improvement in.

` drai'tsmans scales, and particularly to scales .which are adjustable to various positions, so that any desired angles mayl be readily `itound, the object of the invention heling a @Y simple construction ot parts, whereby t may he readily and accurately lormed trom metal, and the invention consists in the cona hase-member 1() adapted to hepermanentlyf secured to a drawing-board or tab-le 11. This includes a straight, graduated edge 12`and a housing 13 containing a sliding clock 1LT,

which may he tired in place by means ot a set-screw 15 extending through a clearance-- slot 16. Secured to the block 14k is a segmental scale 17. Pivota-lly mounted in the block 14 is the tongue 18 ota ruler19, which, for convenience, we will call thehorizontal ruler, to which .is fixed a pointer 20 adapted to sweep the scale 17. The horizontal" ruler 19 also includes a housing 21, containing a sliding block 22 and a segmental scale v23 secured to the block 22 and pivotally mounted in the loloclr 22 is a vertical ruler 24C, in the housing 25 oit which is aj slide 26 carrying at its outer end a circular graduated disk 27, this slide 26 being adjustahly secured in the housing 25 hy means of a set-screw 28 Fig. 5 a sectional View on the line 5;-5 of l which travels in a4 longitudinal slot 29. lPivotally connected with the slide 26 isa scale B0, which, for convenience, we will call a radial scale. This scale is formed with a longltudinal slot 31 mounting a pencil-carrier 32 supporting a pencil 33. The horizon the rulers readily 4adjusted tor section lining or other worlr commonly performed hy drat'tsmen.

l claim:

1. A drattsmans scale, comprising a base, including' a straight edge, and a housing termed with a clearance slot, a block in said housing and a segmental scale secured to the said block, and a horizontal ruler adjustably connected with said block and provided with a pointer adapted to sweep said segmental scale. 2. A drattsmans scale,`comprising a hase, including a straight edge, a housing, a loloclr in said housing and a. segmental scale secured to the said hloclr, a horizontal ruler adjustahly connected with said hloclr andprovided 'with a pointer adapted to sweep said segmental scale, said horizontal ruler comprising a straight edge', a housing, a blocklongitudinally movable in said housing,.and` a segmental scale secured to said block, va vertical ruler pivotally connected with said hloclr and provided with a pointer adapted to sweep the segmental scale in the horizontal ruler. l

3. 'A- drattsmans scale, comprising a hase, including a straight edge, a housing, a block in said housing anda segmental scale secured to the said bloclr, a horizontal ruler adjust- Aalcly connected with said base and provided with a pointer adapted to sweep said segmental scale, said horizontal lruler compris-y ing a straight edge, a housing, a block lon#- pencil-point adjusted y `and providedv'with va pointer adapted to sweep th@ mnta seal@ ruler., the Sad vemtlca rc1 l co o stralght @alge and a nousmg7 a Sd@ ongb tudnalljy" mow/Me im said housing, a L adu- In testimony whereofel T have signed 'ifxrf specicaton in the presence of two Subscbl@ mg wlt-nesses.

` PASQUALE PASQUARIELL()n Witnesses:

FREDERIC C. EARLE, Emmi P. Naoe.. 

